Name of the circuit (RC)

Discussion in 'The Projects Forum' started by jack91, Dec 22, 2012.

  1. jack91

    Thread Starter New Member

    Mar 26, 2012
    1
    0
    Hi,

    I'm looking to buy variable capacitance+resistor connected in parallel for my project.
    http://www.ustudy.in/node/3598

    I would like to adjust it's capacitance+resistance by the means of digital input so some sort of controller would be an advantage.

    Would you mind to tell the name of such circuit? I usually try to buy things off rs-online.co.uk
     
  2. panic mode

    Senior Member

    Oct 10, 2011
    1,318
    304
    you can use varicap / varactor diode as variable capacitance or motorize variable capacitor. either way you will get very small capacitance (10-500pF).
    there are digital potentiometers or you can motorize conventional ones (just attach hobby servo to shaft of potentiometer).
    servos are easily controlled by MCUs.
     
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